给出下列四个结论:
(1)如图
中,
,
,
.
是斜边
上的点,
.以
为起点任作一条射线
交
于
点,则
点落在线段
上的概率是
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/f011ae2d-d883-4983-9fc4-52e6978666a9.png?resizew=221)
(2)设某大学的女生体重
与身高
具有线性相关关系,根据一组样本数据
,
,2,
,
,用最小二乘法建立的线性回归方程为
,则若该大学某女生身高增加
,则其体重约增加
;
(3)若
是定义在
上的奇函数,且满足
,则函数
的图象关于
对称;
(4)已知随机变量
服从正态分布
,
,则
.
其中正确结论的序号为________________
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10cbd78bbf6c9c57d68e805dbddb64c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68e744f480e11f588570c5d6738799f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8cfe5c37d1d3c4f34af28dcf9be6392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/2/f011ae2d-d883-4983-9fc4-52e6978666a9.png?resizew=221)
(2)设某大学的女生体重
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9ba38a31c1aa6827df859474a35d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be6e964c405a9cdf6623f9219898fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fc74ce304baf34786c30b0ec85d53a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd122df0d49f82aff25d5d00c14053e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713ac1eb0d8cce55d51e62ef4a2b1634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b6db78ff747b071964f0790a2e64b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac85e2ed257d4f9be52a776c29f6ca67.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78132753bd0d62932f7ff62a7046f7ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(4)已知随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d04b28e5ef8671c6afd89b8e0dbe52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65ba04ecaea00e54f550685f61d9a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7bdf344ebd7cd1bb3faef18e023938a.png)
其中正确结论的序号为
更新时间:2016-12-03 13:38:42
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